…cord ends at T12–L1, so these levels encounter only the roots of the cauda equina. If in doubt: choose a level lower, never higher…

…first. Procedure Choice of insertion site The left lower quadrant is the first choice : the abdominal wall is thinner there than on the right, and…

…of the most useful signs Low voltage on the ECG, electrical alternans Supportive; it does not exclude Diastolic collapse of the right atrium and right…

…is because it does not ensure complete drainage of the pericardium, and needles or catheters are at risk of bending or damage during chest compressions…

…lip) Venous drainage towards the cavernous sinus Surgeon or ENT; often antibiotics Palm, fingers, tendon sheaths Deep compartments and tendon sheaths, loss of function Orthopaedic…

…which is the commonest cause of recurrence. Indications Condition Procedure : : Acute paronychia with fluctuance or visible pus Incision and drainage Acute paronychia without pus formation…

…close to the upper border of the rib, never at the lower border where the neurovascular bundle lies, and the drainage is stopped for coughing…

…a needle due to reduced risk of injury. Thoracostomy should be performed promptly following needle decompression. Thoracostomy with drainage typically serves as a stabilizing intervention…

…equipment A laryngeal mask of the correct size plus one size above and one below. Second generation masks with a separate drainage channel (i gel…

…impairment or a large residual volume. A need for accurate measurement of urine output in a critically ill patient. Perioperatively and postoperatively in longer procedures…